/Engine/Source/Runtime/SlateCore/Public/Types/Attributes/SlateAttributeMember.inl
Shorthand for the boilerplace code: MyAttribute.UpdateValueNow(); MyAttribute.Get(DefaultValue);
the SlateAttribute cached value or the DefaultValue if the reference is invalid.
UE_NODISCARD const [ObjectType](API\Runtime\SlateCore\Types\Attributes\TSlateMemberAttributeRef\ObjectType) & UpdateAndGet ( const [ObjectType](API\Runtime\SlateCore\Types\Attributes\TSlateMemberAttributeRef\ObjectType) & DefaultValue )